CN107706545B - CTS array antenna system with wide-angle scanning function - Google Patents
CTS array antenna system with wide-angle scanning function Download PDFInfo
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- CN107706545B CN107706545B CN201710775307.2A CN201710775307A CN107706545B CN 107706545 B CN107706545 B CN 107706545B CN 201710775307 A CN201710775307 A CN 201710775307A CN 107706545 B CN107706545 B CN 107706545B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
- H01Q3/36—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means with variable phase-shifters
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Abstract
The invention discloses a CTS array antenna system with a wide-angle scanning function.A quasi-plane wave dispersing device is connected between a CTS antenna array surface and a flat waveguide feed source, so that the incident quasi-plane wave is dispersed, and is converted into a coaxial mode, and the traditional power division network is also saved; through the active component arranged between the collimating plane wave dispersing devices, the phase control scanning of the wave beams is realized, so that the lower feed loss and the lower heat consumption are realized. Therefore, the CTS array antenna system with the wide-angle scanning function has the characteristics of wide frequency band, high gain and wide-angle scanning, and also has the advantages of low profile, low cost and low heat consumption.
Description
Technical Field
The invention belongs to the technical field of antennas, and particularly relates to a CTS array antenna system with a wide-angle scanning function.
Background
The envelope size of the conventional mechanical movable reflector antenna is large; the traditional one-dimensional scanning phased array antenna mostly adopts waveguide slot line elements, microstrip line elements, oscillator line elements and the like. For the one-dimensional scanning waveguide slot antenna, along with the increase of the gain of the array element, the working frequency band of the array element becomes narrow, and the requirement of a wide frequency band is difficult to meet; for the one-dimensional scanning microstrip line elements and the oscillator line elements, a power synthesis network is needed, the network loss is increased along with the increase of the array element gain, and correspondingly, the heat consumption is also larger.
Disclosure of Invention
The technical problem of the invention is solved: the CTS array antenna system with the wide-angle scanning function has the advantages of low profile, low cost and low heat consumption while meeting the requirements of wide frequency band, high gain and wide-angle scanning.
In order to solve the above technical problem, the present invention discloses a CTS array antenna system with wide angle scanning function, comprising: the device comprises a CTS antenna array face (1), an alignment plane wave discrete device, a flat waveguide feed source (3), an active component (4) and a wave control component (5); wherein the alignment plane wave dispersing device comprises: a first quasi-plane wave dispersion device (21) and a second quasi-plane wave dispersion device (22);
the radio frequency interface of the CTS antenna array surface (1) is a slab waveguide;
the input port of the flat waveguide feed source (3) is a standard waveguide, and the output port is a flat waveguide;
the radio frequency interface of the active component (4) is an N-path coaxial connector;
the alignment plane wave discrete device is connected between the CTS antenna array surface (1) and the panel waveguide feed source (3), and the active component (4) is arranged between the alignment plane wave discrete devices so as to realize the conversion between the radio frequency interface of the CTS antenna array surface (1) and the output port of the panel waveguide feed source (3) and the N-way coaxial connector;
the wave control component (5) is connected with the active component (4) and controls the output phase of the active component (4) so as to realize the wave beam phase control scanning.
In the CTS array antenna system having the wide-angle scanning function described above,
the flat waveguide feed source (3) is connected with a second quasi-planar wave discrete device (22) through a bent waveguide;
the CTS antenna array (1) is connected to a first quasi-plane wave dispersion device (21).
In the CTS array antenna system having the wide-angle scanning function described above,
the curved waveguide is as follows: the waveguide is bent by 90 degrees.
In the CTS array antenna system having the wide-angle scanning function described above,
an active component (4) is arranged below the CTS antenna array (1) and is respectively inserted into the first quasi-plane wave discrete device (21) and the second quasi-plane wave discrete device (22).
In the CTS array antenna system having the wide-angle scanning function described above,
the CTS antenna array face (1) is a CTS array antenna with a parallel structure.
In the CTS array antenna system having the wide-angle scanning function described above,
the CTS antenna array face (1) is a CTS array antenna with a 6-level parallel structure and comprises 64 radiation branches;
the radiation front size of the CTS antenna front (1) is 360mm 240 mm.
In the CTS array antenna system having a wide angle scanning function as described above, the slab waveguide feed (3) includes: an H-face choke groove horn (31), a flat-box reflector (32) and a wave-absorbing material (33);
the flat-box reflector (32) adopts an offset feed mode, and the height of the flat-box reflector (32) is consistent with that of a slab waveguide of the quasi-plane wave dispersion device;
the H-face choke groove horn (31) and the flat box reflector (32) share a metal bottom plate and a cover plate; the phase center of the H-face choke groove horn (31) is positioned at the focus of the flat-box reflector (32), and the offset distance of the flat-box reflector (32) meets the requirement of avoiding the shielding of the H-face choke groove horn (31);
the wave-absorbing material (33) is adhered to the straight edge of the flat-box reflector (32).
In the CTS array antenna system with the wide-angle scanning function, the first quasi-plane wave dispersing device (21) and the second quasi-plane wave dispersing device (22) have the same structure;
wherein the first quasi-plane wave dispersion device (21) comprises: the device comprises a flat waveguide cavity (211) with one closed end, an N-element microstrip antenna array (212), a metal probe set (213) and an N-path coaxial connector (214) of the quasi-plane wave discrete device;
the metal probe group (213) divides the flat waveguide cavity (211) into N units;
the N-element microstrip antenna array (212) is inserted among N units of the slab waveguide cavity (211);
the N-element microstrip antenna array (212) is welded with the N-path coaxial connector (214) of the quasi-plane wave dispersion device;
the N-path coaxial connectors (214) of the quasi-plane wave dispersion device are arranged on one side or two sides of the flat waveguide cavity (211).
In the CTS array antenna system having the wide-angle scanning function described above,
the arrangement pitch of the N-path coaxial connectors (214) of the quasi-plane wave dispersion device is less than 0.5 lambda; where λ represents one air wavelength.
In the CTS array antenna system with wide angle scanning function, the system further includes: a copper-clad dielectric plate (6);
a circularly polarized grid pattern is etched on the copper-coated dielectric plate (6);
and the copper-coated dielectric plate (6) is fixed above the CTS antenna array surface (1).
The invention has the following advantages:
the invention discloses a CTS array antenna system with a wide-angle scanning function.A quasi-plane wave dispersing device is connected between a CTS antenna array surface and a flat waveguide feed source, so that the incident quasi-plane wave is dispersed, and is converted into a coaxial mode, and the traditional power division network is also saved; the phased scanning of the beam is achieved by an active assembly disposed between a pair of quasi-plane wave discretizers, thereby achieving smaller feed losses and lower heat dissipation. Therefore, the CTS array antenna system with the wide-angle scanning function has the characteristics of wide frequency band, high gain and wide-angle scanning, and also has the advantages of low profile, low cost and low heat consumption.
Drawings
Fig. 1 is a schematic structural diagram of a CTS array antenna system with wide-angle scanning function according to an embodiment of the present invention;
fig. 2 is a block diagram of a CTS array antenna system with wide angle scanning function according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an active component and a wave control component in an embodiment of the invention;
fig. 4 is a schematic diagram of a partial structure of a CTS antenna array in an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a planar waveguide feed according to an embodiment of the present invention;
FIG. 6 is an exploded view of a quasi-plane wave dispersion device in accordance with an embodiment of the present invention;
FIG. 7 is a schematic diagram of a circularly polarized grating according to an embodiment of the present invention;
fig. 8 is a schematic illustration of the standing wave ratio of a CTS antenna array in an embodiment of the present invention;
fig. 9 is a directional diagram of a CTS antenna array in accordance with an embodiment of the present invention;
FIG. 10 is a schematic illustration of the insertion loss of a CTS antenna array plane circular polarization grating in an embodiment of the present invention;
FIG. 11 is a schematic diagram of the transmission phase of a CTS antenna array plane circular polarization grating in an embodiment of the present invention;
FIG. 12 is a schematic illustration of the standing wave ratio of a quasi-planar wave dispersing device in an embodiment of the present invention;
FIG. 13 is a schematic illustration of port isolation for a quasi-plane wave discretization device in an embodiment of the present invention;
fig. 14 is a schematic view of a scanning beam of an array antenna system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, common embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, a schematic structural diagram of a CTS array antenna system with a wide-angle scanning function according to an embodiment of the present invention is shown. Referring to fig. 2, a block diagram of a CTS array antenna system with wide angle scanning function according to an embodiment of the present invention is shown. In this embodiment, the structure of the CTS (Continuous Transverse Stub, CTS) array antenna system with wide-angle scanning function includes: the device comprises a CTS antenna array face 1, an alignment plane wave discrete device, a flat waveguide feed source 3, an active component 4 and a wave control component 5. Wherein the alignment plane wave dispersing device comprises: a first quasi-plane wave dispersing device 21 and a second quasi-plane wave dispersing device 22.
As shown in fig. 1 and fig. 2, the radio frequency interface of the CTS antenna array 1 is a slab waveguide; the input port of the flat waveguide feed source 3 is a standard waveguide, and the output port is a flat waveguide; the radio frequency interface of the active component 4 is an N-way coaxial connector. The aligned plane wave discrete device is connected between the CTS antenna array surface 1 and the flat waveguide feed source 3, and the active component 4 is arranged between the aligned plane wave discrete devices, so that the conversion between the radio frequency interface of the CTS antenna array surface 1 and the output port of the flat waveguide feed source 3 and the N-path coaxial connector, namely the conversion between the standard waveguide and the N-path coaxial connector is realized. The wave control component 5 is connected with the active component 4 and controls the output phase of the active component 4 to realize the wave beam phase control scanning.
In this embodiment, the radio frequency interface of the whole CTS array antenna system is located in the slab waveguide feed source 3, and between the slab waveguide feed source 3 and the CTS antenna array 1, because a quasi-planar wave dispersion device is used, the conversion between the slab waveguide and the N-way coaxial connector is realized, and further, the active component 4 can be accessed, and the one-dimensional scanning of the beam is realized under the control of the wave control component 5.
In a preferred embodiment of the present invention, the slab waveguide feed 3 is connected to the second quasi-planar wave dispersion device 22 through a bent waveguide; the CTS antenna array 1 is connected to a first quasi-planar wave dispersion device 21. The curved waveguide may specifically be: the waveguide is bent by 90 degrees.
In a preferred embodiment of the invention, the active components 4 are arranged below said CTS antenna array 1, respectively interleaved with said first and second quasi-plane wave dispersing devices 21 and 22.
Referring to fig. 3, a schematic diagram of an active component and a wave control component in an embodiment of the invention is shown. The active component 4 and the wave control component 5 share a metal shell and are symmetrically arranged below the CTS antenna array surface 1, on one hand, the active component 4 can be inserted into the first quasi-planar wave dispersion device 21 and the second quasi-planar wave dispersion device 22, on the other hand, the active component 4 can utilize the back plate of the CTS antenna array surface 1 to realize heat dissipation, and the active component has the advantages of low profile, low cost, low heat consumption and the like while realizing broadband, high gain and wide angle scanning.
In a preferred embodiment of the present invention, the CTS antenna array 1 is a CTS array antenna of a parallel configuration.
In this embodiment, the rf input port of the CTS antenna array 1 is a slab waveguide, and in order to implement broadband characteristics, a multi-stage parallel feed mode is adopted, and a quasi-planar wave is transmitted to the last stage, i.e., the continuous transverse branch, along the slab waveguide connected in parallel, and then radiated. As shown in fig. 4, which illustrates a schematic diagram of a partial structure of a CTS antenna array in an embodiment of the present invention, it can be seen that, the CTS antenna array 1 forms a multi-stage parallel T-shaped slab waveguide air cavity by using a metal strip structure, and has a broadband characteristic, and the electrical size of the array meets the requirement of high gain.
Taking a CTS array antenna system with a Ka frequency band (30GHz) having a one-dimensional wide angle scanning function as an example, the CTS antenna array 1 may be a CTS array antenna with a 6-level parallel structure, that is, 64 radiation branches are provided, and the radiation array size is 360mm × 240 mm; after the CTS antenna array is connected to the first quasi-plane wave dispersing device 21, its dispersing unit pitch is 4.5 mm.
In a preferred embodiment of the present invention, the slab waveguide feed 3 may include: an H-plane choke groove horn 31, a flat-box reflector 32 and a wave-absorbing material 33. The slab waveguide feed 3 can convert TE10 Wave of standard waveguide into quasi-TEM (TEM, Transverse electromagnetic Wave) Wave of slab waveguide.
In this embodiment, referring to fig. 5, a schematic structural diagram of a planar waveguide feed according to an embodiment of the present invention is shown. As shown in fig. 5, the flat-box reflector 32 is in an offset feed mode, and the height of the flat-box reflector 32 is consistent with that of the slab waveguide of the quasi-plane wave dispersion device; the H-plane choke groove horn 31 and the flat box reflector 32 share a metal bottom plate and a cover plate; the phase center of the H-face choke groove horn 31 is positioned at the focus of the flat-box reflector 32, and the offset distance of the flat-box reflector 32 meets the requirement of avoiding the shielding of the H-face choke groove horn 31; the wave absorbing material 33 is adhered to the straight edge of the flat-box reflector 32, that is, the wave absorbing material with a certain thickness is mounted on the curved surface of the flat-box reflector 32 and other surfaces of the slab waveguide feed source 3.
In the present embodiment, the quasi-plane wave obtained by the slab waveguide feed 3, the approximation degree of which to the ideal plane wave, affects the amplitude-phase characteristics of the array antenna unit, thereby affecting the scanning characteristics of the array antenna. In the slab waveguide feed 3, the structural parameters of the flat-box reflector 32 and the structural parameters of the H-plane choke groove horn 31 can be used as optimization variables to obtain a quasi-planar wave with a high degree of approximation. The optimization target can not be directly evaluated, but the oral surface field is about uniform based on the corresponding relation between the radiation characteristic and the oral surface field distribution, the higher the radiation directivity coefficient is, the approximation degree of the quasi-plane wave can be indirectly represented by the radiation directivity coefficient of the flat waveguide port of the flat waveguide feed source 3, and the quasi-plane wave with higher approximation degree can be obtained by adjusting and optimizing the optimization variable by taking the radiation directivity coefficient as the visual optimization target.
In a preferred embodiment of the present invention, the first quasi-plane wave dispersing device 21 and the second quasi-plane wave dispersing device 22 have the same structure.
The structure of the plane wave dispersing device will be described by taking the first quasi-plane wave dispersing device 21 as an example. Referring to fig. 6, there is shown an exploded view of a quasi-plane wave discretization device in an embodiment of the present invention. As can be seen, the first quasi-plane wave dispersion device 21 may include: the device comprises a slab waveguide cavity 211 with one closed end, an N-element microstrip antenna array 212, a metal probe set 213 and an N-way coaxial connector 214 of the quasi-plane wave discrete device.
Wherein the metal probe group 213 partitions the slab waveguide cavity 211 into N cells; the N-element microstrip antenna array 212 is inserted among N units of the slab waveguide cavity 211; the N-element microstrip antenna array 212 is welded with the N-path coaxial connector 214 of the quasi-plane wave dispersion device; the N-way coaxial connector 214 of the quasi-plane wave dispersion device is arranged at one side or two sides of the slab waveguide cavity 211.
Preferably, the N-element microstrip antenna array 212 may be in a form with a wider operating band, such as Vivaldi microstrip antenna, and the relative radio frequency bandwidth with a standing-wave ratio less than 1.2 can reach more than 10%. The number of the microstrip antennas is the same as that of the coaxial connectors, and the microstrip antennas are connected with the coaxial connectors one by one.
Preferably, the metal probe set 213 is the core of the quasi-plane wave dispersion device, which can not only perform dense port separation on the slab waveguide without propagation mode cutoff, but also adjust the port impedance performance.
Preferably, the quasi-plane wave dispersing device can be used as a TEM wave dispersing device and also can be used as a TEM wave acquiring device according to the flow direction requirement of the radio frequency signal.
Preferably, when the N coaxial connectors 214 of the quasi-plane wave dispersion device are arranged on two sides of the slab waveguide cavity 211, a unit pitch smaller than the installation size of the coaxial connectors can be realized, so as to realize beam scanning at a larger angle.
Preferably, the arrangement pitch of the N-way coaxial connectors 214 of the quasi-plane wave dispersion device is less than 0.5 λ; where λ represents one air wavelength. Namely, the unit interval of the quasi-plane wave discrete device is less than 0.5 wavelength, the requirement of wide-angle scanning is met, and the traditional power distribution network is omitted.
In a preferred embodiment of the present invention, the CTS array antenna system with wide-angle scanning function may further include: and a copper-clad dielectric plate 6.
In the embodiment, a circular polarization gate pattern is etched on the copper-clad dielectric plate 6; and the copper-coated dielectric plate 6 is fixed above the CTS antenna array surface 1. It should be noted that, whether the copper-clad dielectric plate 6 is arranged or not can be selected according to different application requirements, so that linear polarization or circular polarization of the CTS antenna array face 1 is realized. Fig. 7 shows a schematic diagram of a circular polarization grating according to an embodiment of the present invention.
Based on the above embodiments, the operation principle of the CTS array antenna system with wide-angle scanning function according to the present invention is explained. The working principle of the CTS array antenna system with wide-angle scanning function of the present invention may be as follows:
based on a parallel structure CTS antenna array for transmitting non-dispersive quasi-TEM waves, broadband and high-gain characteristics are obtained; the conversion from a standard waveguide TE10 mode to a flat waveguide quasi-TEM wave is realized through a flat waveguide feed source; the conversion between the flat waveguide and the N-path coaxial connector is realized through an alignment plane wave dispersion (acquisition) device, and an active component is accessed between the flat waveguide and the N-path coaxial connector to realize the phase control scanning of wave beams; the unit spacing of the quasi-plane wave dispersion (acquisition) device is less than 0.5 wavelength, the wide-angle scanning requirement is met, and the traditional power distribution network is omitted. Secondly, a quasi-plane wave approximation optimization method of the planar waveguide feed source is provided based on the relation between the directivity coefficient and the orofacial field distribution, namely, the more uniform the orofacial field distribution is, the higher the directivity coefficient is, and conversely, the lower the directivity coefficient is. In order to increase optimization variables and adjust the planar field distribution of the planar waveguide port, a scheme of feeding by adopting an H-plane choke groove horn is provided.
Referring to fig. 8, a schematic diagram of the standing wave ratio of the front of a CTS antenna in the embodiment of the present invention is shown, and it can be seen that the standing wave ratio of the front is less than 1.3 in the relative bandwidth of more than 15%.
Referring to fig. 9, a directional diagram of the CTS antenna array is shown in the embodiment of the present invention, it can be seen that, right in front, the radiation directivity coefficient of the CTS antenna array reaches 38.8dBi, and the corresponding aperture efficiency exceeds 80%.
Referring to fig. 10, a schematic diagram of an insertion loss of a CTS antenna wavefront circular polarization grating in an embodiment of the present invention is shown, and referring to fig. 11, a schematic diagram of a transmission phase of a CTS antenna wavefront circular polarization grating in an embodiment of the present invention is shown. Therefore, the influence of the use of the circular polarization grating on the antenna gain is less than 0.3dB, and better circular polarization characteristics can be obtained.
Referring to fig. 12, a schematic diagram illustrating a standing wave ratio of a quasi-plane wave discretization device in an embodiment of the present invention, and referring to fig. 13, a schematic diagram illustrating a port isolation degree of a quasi-plane wave discretization device in an embodiment of the present invention is shown. Therefore, the standing-wave ratio of the unit port is better than 1.25 within the frequency bandwidth of more than 8%; the cell port isolation is about-20 dB.
Referring to fig. 14, a schematic diagram of a scanning beam of an array antenna system according to an embodiment of the present invention is shown. It can be seen that the CTS array antenna system has a wide angle scanning characteristic.
The invention discloses a CTS array antenna system with a wide-angle scanning function, which discretizes incident quasi-plane waves, converts the incident quasi-plane waves into a coaxial mode, is conveniently connected with a source component and realizes one-dimensional phase control scanning. Theoretically, the quasi-plane wave is continuous, and 90-degree phase scanning can be realized; in engineering application, the discrete degree is limited by the size of the coaxial connector and the like, but the discrete distance smaller than 0.5 wavelength can be realized, and the scanning requirement of +/-70 degrees is met. The CTS array antenna system does not need a power synthesis network, has small feed loss and correspondingly small heat consumption; in addition, the CTS array antenna system can meet the requirement of high gain under a broadband, avoids the contradiction between the broadband and the high gain of the waveguide slot line element and the microstrip line element, and has lower cost. The CTS array antenna system adopts quasi-plane wave incidence with higher approximation degree; an alignment plane wave dispersing (acquiring) device is used, and a multi-stage power division network is not used; the line element spacing of less than 0.5 wavelength is realized, the wide-angle scanning characteristic of +/-70 degrees is obtained, and the CTS array antenna system not only meets the requirements of broadband, high gain and wide-angle coverage, but also has relatively low profile, cost and heat consumption. Therefore, the CTS array antenna system can be applied to airborne, shipborne, satellite-borne and other platforms and has wide application prospects.
In summary, the invention discloses a CTS array antenna system with wide angle scanning function, wherein an alignment plane wave dispersing device is connected between a CTS antenna array surface and a slab waveguide feed source, so as to realize the dispersion of incident alignment plane waves and convert the incident alignment plane waves into a coaxial mode, and further save the traditional power division network; through the active component arranged between the collimating plane wave dispersing devices, the phase control scanning of the wave beams is realized, so that the lower feed loss and the lower heat consumption are realized. Therefore, the CTS array antenna system with the wide-angle scanning function has the characteristics of wide frequency band, high gain and wide-angle scanning, and also has the advantages of low profile, low cost and low heat consumption.
Secondly, the invention provides a scheme of a flat waveguide feed source by irradiating the flat-box reflector by an H-plane choke groove horn, so that the design of the flat waveguide feed source is more flexible.
Thirdly, the CTS array antenna system with the wide-angle scanning function can realize the optimization or indirect evaluation of the quasi-TEM wave approximation degree of the flat waveguide feed source.
In addition, the quasi-plane wave dispersing (acquiring) device adopted by the invention can obtain the unit interval less than 0.5 wavelength, thereby meeting the wide-angle scanning requirement of the array antenna.
The embodiments in the present description are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The above description is only for the best mode of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Those skilled in the art will appreciate that the invention may be practiced without these specific details.
Claims (1)
1. A CTS array antenna system with wide angle scanning, comprising: the device comprises a CTS antenna array face (1), an alignment plane wave discrete device, a flat waveguide feed source (3), an active component (4), a wave control component (5) and a copper-clad dielectric plate (6); wherein the alignment plane wave dispersing device comprises: a first quasi-plane wave dispersion device (21) and a second quasi-plane wave dispersion device (22);
the radio frequency interface of the CTS antenna array surface (1) is a slab waveguide, the input port of the slab waveguide feed source (3) is a standard waveguide, and the output port is a slab waveguide; the planar waveguide feed source (3) is connected with the second quasi-planar wave discrete device (22) through a 90-degree bent waveguide; the CTS antenna array face (1) is connected with a first quasi-plane wave discrete device (21); in order to realize broadband characteristics, a CTS antenna array surface (1) adopts a multi-stage parallel feed mode, quasi-plane waves are transmitted to the final stage, namely a continuous transverse branch along parallel plate waveguides, and then radiation is carried out; the CTS antenna array surface (1) forms a multi-stage parallel T-shaped flat waveguide air cavity by utilizing a metal strip structure, and has broadband characteristics;
the radio frequency interface of the active component (4) is an N-path coaxial connector, the active component (4) is arranged below the CTS antenna array surface (1) and is respectively inserted into the first quasi-plane wave discrete device (21) and the second quasi-plane wave discrete device (22);
the alignment plane wave discrete device is connected between the CTS antenna array surface (1) and the panel waveguide feed source (3), and the active component (4) is arranged between the alignment plane wave discrete devices so as to realize the conversion between the radio frequency interface of the CTS antenna array surface (1) and the output port of the panel waveguide feed source (3) and the N-way coaxial connector;
the wave control component (5) is connected with the active component (4) and controls the output phase of the active component (4) to realize wave beam phase control scanning;
a circularly polarized grid pattern is etched on the copper-coated dielectric plate (6); the copper-clad dielectric plate (6) is fixed above the antenna array surface (1) of CTS (clear to send) diagram 5;
the radio frequency interface of the whole CTS array antenna system is positioned on a flat waveguide feed source (3), a pair of quasi-planar wave dispersing devices are used between the flat waveguide feed source (3) and a CTS antenna array surface (1), so that the conversion between a flat waveguide and an N-path coaxial connector is realized, an active component (4) can be accessed, and the one-dimensional scanning of wave beams is realized under the control of a wave control component (5);
the active component (4) and the wave control component (5) share a metal shell and are divided into two symmetrical parts which are symmetrically arranged below the CTS antenna array surface (1), on one hand, the active component (4) is inserted with the first quasi-plane wave discrete device (21) and the second quasi-plane wave discrete device (22) in an opposite mode, and on the other hand, the active component (4) utilizes a back plate of the CTS antenna array surface (1) to dissipate heat;
wherein:
the CTS antenna array face (1) is a CTS array antenna with a 6-level parallel structure and comprises 64 radiation branches; the radiation array surface size of the CTS antenna array surface (1) is 360mm 240 mm; after the CTS antenna array surface (1) is connected with the first quasi-plane wave discrete device (21), the discrete unit interval is 4.5 mm;
a planar waveguide feed (3) comprising: an H-face choke groove horn (31), a flat-box reflector (32) and a wave-absorbing material (33); the flat-box reflector (32) adopts an offset feed mode, and the height of the flat-box reflector (32) is consistent with that of a slab waveguide of the quasi-plane wave dispersion device; the H-face choke groove horn (31) and the flat box reflector (32) share a metal bottom plate and a cover plate; the phase center of the H-face choke groove horn (31) is positioned at the focus of the flat-box reflector (32), and the offset distance of the flat-box reflector (32) meets the requirement of avoiding the shielding of the H-face choke groove horn (31); the wave-absorbing material (33) is adhered to the straight edge of the flat-box reflector (32); namely, wave-absorbing materials with certain thickness are arranged on other surfaces of the flat waveguide feed source (3) except for the curved surface of the flat box reflector (32);
the first quasi plane wave dispersing device (21) and the second quasi plane wave dispersing device (22) have the same structure; a first quasi-plane wave dispersion device (21) comprising: the device comprises a flat waveguide cavity (211) with one closed end, an N-element microstrip antenna array (212), a metal probe set (213) and an N-path coaxial connector (214) of the quasi-plane wave discrete device; the metal probe group (213) divides the flat waveguide cavity (211) into N units; the N-element microstrip antenna array (212) is inserted among N units of the slab waveguide cavity (211); the N-element microstrip antenna array (212) is welded with the N-path coaxial connector (214) of the quasi-plane wave dispersion device; n coaxial connectors (214) of the quasi-plane wave dispersion device are arranged on one side or two sides of the flat waveguide cavity (211); the arrangement distance of the N coaxial connectors (214) of the quasi-plane wave dispersion device is smaller than 0.5 lambda, the requirement of wide-angle scanning is met, and a traditional power distribution network is omitted; λ represents an air wavelength; the metal probe group (213) can not only perform dense port separation on the slab waveguide without stopping a propagation mode, but also adjust the impedance performance of the port;
the quasi-plane wave dispersing device is used as a TEM wave dispersing device or a TEM wave obtaining device according to the flow direction requirement of the radio frequency signal;
when the N coaxial connectors (214) of the quasi-plane wave dispersion device are arranged on two sides of the plate waveguide cavity (211), the unit spacing is smaller than the unit spacing of the installation size of the coaxial connectors, and large-angle beam scanning is achieved.
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| CN113140916B (en) * | 2021-04-06 | 2022-07-05 | 浙江大学 | Multilayer ridge waveguide antenna feed structure |
| CN113517564B (en) * | 2021-04-06 | 2024-05-24 | 浙江大学 | CTS wave beam scanning antenna based on multilayer suspension strip line structure |
| CN114725677A (en) * | 2022-03-14 | 2022-07-08 | 中国电子科技集团公司第十四研究所 | Novel wide waveguide feed structure based on variable wavefront |
| CN116845586B (en) * | 2023-08-10 | 2024-03-01 | 成都辰星迅联科技有限公司 | Broadband wide-angle self-generating circularly polarized VICTS antenna |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999000871A1 (en) * | 1997-06-30 | 1999-01-07 | Raytheon Company | Antenna feed architecture for use with a continuous transverse stub antenna array |
| US7079082B2 (en) * | 2004-03-31 | 2006-07-18 | University Of Hawaii | Coplanar waveguide continuous transverse stub (CPW-CTS) antenna for wireless communications |
| EP1856769A1 (en) * | 2005-03-08 | 2007-11-21 | Raytheon Company | True-time-delay feed network for cts array |
| CN103441335A (en) * | 2013-09-10 | 2013-12-11 | 西安电子科技大学 | Broadband wire source for planar waveguide CTS antenna feed device |
| CN106356599A (en) * | 2016-08-30 | 2017-01-25 | 西安空间无线电技术研究所 | Quasi-plane wave discretion or acquisition method and device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6999040B2 (en) * | 2003-06-18 | 2006-02-14 | Raytheon Company | Transverse device array phase shifter circuit techniques and antennas |
| CN105493348B (en) * | 2014-02-17 | 2018-03-13 | 华为技术有限公司 | Multiband common reflector |
| CN104332714B (en) * | 2014-11-13 | 2017-05-03 | 安徽四创电子股份有限公司 | Dual-polarized oblique beam waveguide slot array antenna |
| CN105655720A (en) * | 2015-12-09 | 2016-06-08 | 上海大学 | Broad-band high-gain scannable panel antenna of parabolic reflection surface feeding |
| CN206451828U (en) * | 2016-12-29 | 2017-08-29 | 深圳超级数据链技术有限公司 | The feed structure of planar waveguide antenna |
-
2017
- 2017-08-31 CN CN201710775307.2A patent/CN107706545B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999000871A1 (en) * | 1997-06-30 | 1999-01-07 | Raytheon Company | Antenna feed architecture for use with a continuous transverse stub antenna array |
| US7079082B2 (en) * | 2004-03-31 | 2006-07-18 | University Of Hawaii | Coplanar waveguide continuous transverse stub (CPW-CTS) antenna for wireless communications |
| EP1856769A1 (en) * | 2005-03-08 | 2007-11-21 | Raytheon Company | True-time-delay feed network for cts array |
| CN103441335A (en) * | 2013-09-10 | 2013-12-11 | 西安电子科技大学 | Broadband wire source for planar waveguide CTS antenna feed device |
| CN106356599A (en) * | 2016-08-30 | 2017-01-25 | 西安空间无线电技术研究所 | Quasi-plane wave discretion or acquisition method and device |
Non-Patent Citations (1)
| Title |
|---|
| "多频带/超宽带平面印刷天线及连续切向节天线阵列研究";李铂;《中国博士学位论文全文数据库信息科技辑》;20131015;第5-7章 * |
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